Niigata International Open Jiu Jitsu Championship 2025 Male Blue Master 36 Feather 5 Mins ~70.0kg 4 1 / 1 Division Max Weight Time Competitors Brackets Final JPN Araki Tadahiro Renatus Bjj JPN Maeda Naoki Blue House Fight 31 Mat 2 29 Jun 4:09AM JPN Nagahama Yutaka Renatus Bjj JPN Shinmura　 Asato Trickster Bjj Fight 32 Mat 2 29 Jun 4:18AM Maeda Naoki Blue House Nagahama Yutaka Renatus Bjj JPN JPN Fight 36 Mat 2 29 Jun 4:31AM Maeda Naoki Blue House JPN